mobx library

MobX is a library for reactively managing the state of your applications.

Describe the state of your application as a graph of observable-values. Setup reactions that observe these observable values. When a dependent observable changes, the reactions are automatically triggered. The observables are treated as the implicit dependencies of the reaction. No explicit wiring is needed, besides just using it inside a reaction.

With these simple primitives, you can tackle a wide variety of state management use-cases in your Dart apps.

Consider the following example:

var x = Observable(10);
var y = Observable(20);

autorun((){
  print(x.value + y.value); // just referencing the observable values is enough to start tracking
}); // prints 30

// When x or y changes
x.value = 20; // prints 40
y.value = 30; // prints 50

Notice there is no explicit subscription to any observable values. By simply referencing the observables, the reaction picks up the dependencies. When they change, the reaction is automatically triggered.